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OLD THREAD DAC End by Andrea Ciuffoli

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#161
Is there a BOM for this?

I'm interested in this buy, but I am curious if has put together a BOM with prices for all parts including transformers, and tubes (but not chassis).

I'm trying to figure out what the total investment will be before I sign up.
 
#162
PCB DAC-end

Hi all !
Thank you interested this DAC, This layout of DAC-end and Supply. You can see! now, I finis all layout, I waiting Andrea Ciuffoli check a gain!
So We wil start Now.

A. COST OF One SET *4PCB* :
1. PCB- DAC END use AD1865
2. PCB- Salas Shunt For DAC
3. PCB- I/V stage use tube E182CC or 5687
4. PCB- Supply for I/V

The price:
Board set (of 4):
Shipping from Vietnam: US$ 6 (surface mail)
Payment fee (PayPal) at 3.5%: US$
TOTAL: US$ 60
A donation of $2 USD to diyAudio will be done for Board set (of 4)

Please feel free to make your inquiries or request of information to my email address quanghao168@yahoo.com.vn
And my paypal the same my E-mail!You can pay to it!

Thank you Andrea Ciuffoli,
Thank you Salas
Thank you all friend!
quanghao
 

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#169
Hi, would like to be in for one set.

1. MarkLai : 2x DAC sets: DAC + Salas Shunt power for DAC
2. Jeffrey Davison : full set
3. TjongKristian : full set
4. gillib : full set
5. sugden : full set
6. toufu : 2 full sets
7. sugden : 1 set
8. Yunick : full set
9. Michael : full set
10. COX77 : full set
11. Yunick : full set
12. jleaman : ?
13. fredlock : full set
14. Cobra2 : full set
15. assosk: full set
16. pdcaceo:full set of PCB
17. pop music : 2 full set
18. Erwincantona : full set
19. numerik
20. Tea-Bag : full set
21. giabast : full set
22.Blitz : full set
23. Duc Tran: full set
24. agithegreat: full set
25.jims : full set
26. khaho : full set
27. ernesternest: full set

Thanks Ernst
 
#171
In any vacuum tube stage the signal on the anode is in outphase with the grid signal.

If in this dac we want use a single output tube and there is no output transformer we will have an outphase output signal.

To get an inphase signal output I have modified the schematic and pcb with Quanghao to insert a digital phase inverter.

This digital phase inverter has been created using a section of the 74HC04 on the data signal.

A little jump will allow to decide the output phase.
 
#173
Hi, would like to be in for one set, too.

1. MarkLai : 2x DAC sets: DAC + Salas Shunt power for DAC
2. Jeffrey Davison : full set
3. TjongKristian : full set
4. gillib : full set
5. sugden : full set
6. toufu : 2 full sets
7. sugden : 1 set
8. Yunick : full set
9. Michael : full set
10. COX77 : full set
11. Yunick : full set
12. jleaman : ?
13. fredlock : full set
14. Cobra2 : full set
15. assosk: full set
16. pdcaceo:full set of PCB
17. pop music : 2 full set
18. Erwincantona : full set
19. numerik
20. Tea-Bag : full set
21. giabast : full set
22.Blitz : full set
23. Duc Tran: full set
24. agithegreat: full set
25.jims : full set
26. khaho : full set
27. ernesternest: full set
28. dvb-projekt: ful set

Best regards,
Oliver
 
#175
erwincantona said:
I saw DAC END Board at your post number 162 is different with posting number 170.

Which is the Final DAC End Board ? (No 162 or 170?)

AND

IV STAGE Board at your posting number 147/148 is also different with posting number 172
Click to expand...

yes sir! Last i post I use tube SRPP out put! Now We dont use SRPP, use paralle tube out put or tranformer out put on one PCB!
You can se

Audiodesign wrote:

**In any vacuum tube stage the signal on the anode is in outphase with the grid signal.

If in this dac we want use a single output tube and there is no output transformer we will have an outphase output signal.

To get an inphase signal output I have modified the schematic and pcb with Quanghao to insert a digital phase inverter.

This digital phase inverter has been created using a section of the 74HC04 on the data signal.

A little jump will allow to decide the output phase.***
 
#176
quanghao said:
yes sir! Last i post I use tube SRPP out put! Now We dont use SRPP, use paralle tube out put or tranformer out put on one PCB!
You can se

Audiodesign wrote:

**In any vacuum tube stage the signal on the anode is in outphase with the grid signal.

If in this dac we want use a single output tube and there is no output transformer we will have an outphase output signal.

To get an inphase signal output I have modified the schematic and pcb with Quanghao to insert a digital phase inverter.

This digital phase inverter has been created using a section of the 74HC04 on the data signal.

A little jump will allow to decide the output phase.***
Click to expand...

Has Andrea finished check and tested all your design board?
Is it Okay for the result?

So... when do you start to bring this design for mass production (for Group Buys). There are already 28 persons

When do you share to us Final Part List (for those 4 boards?)
Thanks
 
Last edited:
#178
We start make PCB of DAC-end and Salas shunt for DAC

Hi everyone. Current everything I was ready to submit designs for manufacturers to make circuits.

So you have registered, please let me transfer the funds to my order soon.

Time to receive funding to start from today to 15-1-2010 (period of one week). When I receiving funding will be made immediately,
on the 16-1 production was finished 23-1-2010 (lost a week).
Then I will send the first day for all of you!

Thank you and please transfer money to my account
My papal account: quanghao168@yahoo.com.vn

A.COST OF One SET *4PCB* :
1. PCB- DAC END use AD1865
2. PCB- Salas Shunt For DAC
3. PCB- I/V stage use tube E182CC or 5687
4. PCB- Supply for I/V

The price:
Board set (of 4):
Shipping from Vietnam: US$ 6 (surface mail)
Payment fee (PayPal) at 3.5%: US$
TOTAL: US$ 60
A donation of $2 USD to diyAudio will be done for Board set (of 4)

Please feel free to make your inquiries or request of information to my email address quanghao168@yahoo.com.vn

There are some friend sent to me, And I got them.

1. MarkLai : 2x DAC sets: DAC + Salas Shunt power for DAC
2. Jeffrey Davison : full set
3. TjongKristian : full set
4. gillib : full set
5. sugden : full set
6. toufu : 2 full sets
7. sugden : 1 set
8. Yunick : full set
9. Michael : full set
10. COX77 : full set
11. Yunick : full set
12. jleaman : ?
13. fredlock : full set
14. Cobra2 : full set
15. assosk: full set
16. pdcaceo:full set of PCB
17. pop music : 2 full set
18. Erwincantona : full set
19. numerik
20. Tea-Bag : full set
21. giabast : full set
22.Blitz : full set
23. Duc Tran: full set
24. agithegreat: full set
25.jims : full set
26. khaho : full set
27. ernesternest: full set
28. dvb-projekt: full set
29. quanghao: full set
30.Audiodesign: full set

Best regards,
Quanghao
 
Last edited:
#179
We start make PCB of DAC-end and Salas shunt for DAC

Does the total cost for the full PCB set of $60 includes the
shipping ($6) and paypal fee (3.5%)

Please feel free to make your inquiries or request of information to my email address quanghao168@yahoo.com.vn
Thank you and please transfer money to my account
My paypal account: quanghao168@yahoo.com.vn

There are some friend sent to me, And I got them.

1. MarkLai : 2x DAC sets: DAC + Salas Shunt power for DAC
2. Jeffrey Davison : full set
3. TjongKristian : full set
4. gillib : full set
5. sugden : full set
6. toufu : 2 full sets
7. sugden : 1 set
8. Yunick : full set
9. Michael : full set
10. COX77 : full set
11. Yunick : full set
12. jleaman : ?
13. fredlock : full set
14. Cobra2 : full set
15. assosk: full set
16. pdcaceo:full set of PCB
17. pop music : 2 full set
18. Erwincantona : full set
19. numerik
20. Tea-Bag : full set
21. giabast : full set
22.Blitz : full set
23. Duc Tran: full set
24. agithegreat: full set
25.jims : full set
26. khaho : full set
27. ernesternest: full set
28. dvb-projekt: full set
29. quanghao: full set
30.Audiodesign: full set

Best regards,
Quanghao
 
#180
quanghao said:
Hi everyone. Current everything I was ready to submit designs for manufacturers to make circuits.

So you have registered, please let me transfer the funds to my order soon.

Time to receive funding to start from today to 15-1-2010 (period of one week). When I receiving funding will be made immediately,
on the 16-1 production was finished 23-1-2010 (lost a week).
Then I will send the first day for all of you!

Quanghao
Click to expand...
Hi Quanghao,
To be clear to us, your dates will be:
Last day for payment: January 15
Printing completion: January 23
Shipping will start by January 24
Please help keep those days fixed and keep each of us informed of the shipping details for follow-up.

Regarding the improvement for I/V's capacitor output, please give us assembly instructions to avoid any re-work and burn-out.

Thanks again for your great strives.

Vancao
 
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